some recent changes completely broke the single units build (at least on win32); mouse clicks in the document window have no effect, PgUp/Down keys do not work. I do not have time to look into it now, but if you have recently made changes that affect translation of screen coordinances to internal units and display of images, then please go over your code making sure that the _UL and _UD macros are used where needed (changes to FV_View and XAV_View have the greatest potential for this kind of screwup).
Tomas
